| Sold | Grade | Monthly Average |
| Dec 2023 | 6.0 | $2.50 |
| Oct 2022 | 9.4 | $4.00 |
| Sep 2013 | 9.4 | $15.99 |
| Jul 2013 | 9.4 | $12.00 |
| Nov 2012 | 9.4 | $9.02 |
| Oct 2012 | 9.4 | $9.00 |
| May 2012 | 9.4 | $7.49 |
| Aug 2011 | 9.4 | $7.56 |
| May 2011 | 9.4 | $8.40 |
| Jul 2011 | 9.2 | $7.00 |
| Jun 2011 | 9.2 | $7.00 |
| May 2011 | 9.2 | $7.00 |
| Apr 2014 | 8.5 | $8.49 |
| Jul 2023 | 8.0 | $3.20 |
| Aug 2022 | 8.0 | $2.88 |
| Jan 2020 | 8.0 | $2.88 |
| Sep 2017 | 8.0 | $7.60 |
| Jun 2013 | 8.0 | $8.00 |
| Aug 2014 | 7.5 | $7.49 |